Enhanced heterojunction interface quality to achieve 9.3% efficient Cd-free Cu2ZnSnS4 solar cells using atomic layer deposition ZnSnO buffer layer

• Main Authors: Cui, Xin, Sun, Kaiwen, Huang, Jialiang, Lee, Chang-Yeh, Yan, Chang, Sun, Heng, Zhang, Yuanfang, Liu, Fangyang, Hossain, Md. Anower, Zakaria, Yahya, Wong, Lydia Helena, Green, Martin, Hoex, Bram, Hao, Xiaojing
• Other Authors: School of Materials Science and Engineering
• Format: Article
• Language: English
• Published: 2020
• Subjects: Engineering::Materials; Kesterite; Cu2Znsns4
• Online Access: https://hdl.handle.net/10356/144864
• Institution: Nanyang Technological University

Kesterite Cu2ZnSnS4 (CZTS) photovoltaics have been comprehensively investigated in the past decades but are still hampered by a relatively large open circuit voltage (Voc) deficit, which is correlated to bulk defects in CZTS and interface recombination. Heterojunction interface management is of crit...